Take a video from your Linux desktop
To record a video from your desktop (like a screenshot, just video, also known as screencast) you can use
- the command recordmydesktop
- the command xvidcap
- the command ffmpeg
- the Chrome extension like https://chrome.google.com/webstore/detail/screencastify-screen-vide/mmeijimgabbpbgpdklnllpncmdofkcpn?hl=en
- an external hardware HDMI output recorder (costs 20 bucks)
- open a console
- decide if your current resolution fits. If it does not, change it using xrandr, e.g.
xrandr -s "640x480"
- install recordmydesktop, in this example for SUSE Linux:
yast -i recordmydesktop
- start the video recording with the command
- the result will be a file e.g. out-1.ogv. To convert it to a more efficient size, use e.g.
ffmpeg -i out-1.ogv -f mp4 out-1.mp4
Record a window only
Use xwininfo to find out the window ID, then start recordmydesktop like
recordmydesktop --windowid 0x2400014